KNOWN INFO
TEST OPTIONS
Visual inspection
REASON FOR QUESTION
i3. PARKING BRAKE DOES NOT RELEASE (CONT)
Air tanks pressurized.
No air pressure present at
SYSTEM PARK air supply
valve supply port.
POSSIBLE PROBLEMS
Faulty air hose 107.
Faulty park control two-way
check valve.
Is air present at park control
two-way check valve
delivery port?
If no air pressure is present at
park control two-way check
valve, park control two-way
check valve is faulty. If air
pressure is present, air hose
107 is faulty.
11.
TM 9-2320-365-20-2
2-1664 Change 1
NO
Replace park control two-way
check valve (para 11-17).
YES
Replace air hose
107 (para 11-19).